DIY Case for XL4015 Li-Ion Adjustable Power Supply
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Description
XL4015 Adjustable Power Supply & Li-Ion Charger
This project is a DIY mini digital adjustable power supply and battery charger based on the XL4015 DC-DC buck converter, designed for makers, electronics enthusiasts, and lab use. The enclosure is optimized for 3D printing and provides a clean, practical, and safe way to use the XL4015 module.
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About Project
Applications
- Adjustable bench power supply
- Li-Ion / Li-Po battery charger
- Arduino, ESP32, Raspberry Pi projects
- DIY electronics and prototyping
- Portable and lab power solutions
Key Features XL4015
- Adjustable Output Voltage: 1.25 V – 36 V
- Wide Input Voltage Range: 4 V – 38 V
- Output Current: Up to 5 A
- High Efficiency: >90%
- CC/CV Charging Mode: Ideal for Li-Ion and Li-Po batteries
- LCD Display Support: Real-time voltage and current monitoring
- Compact & Functional Design: Perfect for bench or portable use
Battery Charging (CC/CV)
The XL4015 uses the standard Constant Current / Constant Voltage (CC/CV) charging method:
- CC Mode: Supplies a constant current during the initial charging phase for fast and controlled charging.
- CV Mode: Maintains a constant voltage while the current gradually decreases, preventing overcharging and ensuring safety.
Supported Batteries
- Li-Ion / Li-Po: 4.2 V per cell (4.2 V, 8.4 V, 12.6 V, 16.8 V, etc.)
- Recommended charge current: 0.5C to 1C, depending on battery specifications
Notes
⚠️ Always set the correct voltage and current limits before connecting a battery. ⚠️ A BMS is required for multi-cell battery packs.
This model is ideal for anyone looking for a reliable, efficient, and compact XL4015 enclosure for everyday electronics and maker projects.
Connection diagram
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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